/*
 * File    : LocaleUtilitiesImpl.java
 * Created : 30-Mar-2004
 * By      : parg
 * 
 * Azureus - a Java Bittorrent client
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details ( see the LICENSE file ).
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package org.gudy.azureus2.pluginsimpl.local.utils;

/**
 * @author parg
 *
 */

import java.io.IOException;
import java.io.PipedInputStream;
import java.io.PipedOutputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
import java.util.Properties;
import java.util.PropertyResourceBundle;
import java.util.ResourceBundle;

import org.gudy.azureus2.core3.config.COConfigurationManager;
import org.gudy.azureus2.core3.config.ParameterListener;
import org.gudy.azureus2.core3.internat.LocaleUtil;
import org.gudy.azureus2.core3.internat.LocaleUtilDecoder;
import org.gudy.azureus2.core3.internat.MessageText;
import org.gudy.azureus2.core3.util.Debug;
import org.gudy.azureus2.plugins.PluginInterface;
import org.gudy.azureus2.plugins.utils.LocaleDecoder;
import org.gudy.azureus2.plugins.utils.LocaleListener;
import org.gudy.azureus2.plugins.utils.LocaleUtilities;

public class LocaleUtilitiesImpl implements LocaleUtilities {
    private PluginInterface pi;

    private List listeners;

    public LocaleUtilitiesImpl(PluginInterface _pi) {
        pi = _pi;
    }

    public void integrateLocalisedMessageBundle(String resource_bundle_prefix) {
        MessageText.integratePluginMessages(resource_bundle_prefix, pi.getPluginClassLoader());
    }

    public void integrateLocalisedMessageBundle(ResourceBundle rb) {
        MessageText.integratePluginMessages(rb);
    }

    public void integrateLocalisedMessageBundle(Properties p) {
        // Surely there's a more convenient way of doing this?
        ResourceBundle rb = null;
        try {
            PipedInputStream in_stream = new PipedInputStream();
            PipedOutputStream out_stream = new PipedOutputStream(in_stream);
            p.store(out_stream, "");
            out_stream.close();
            rb = new PropertyResourceBundle(in_stream);
            in_stream.close();
        } catch (IOException ioe) {
            return;
        }
        integrateLocalisedMessageBundle(rb);
    }

    public String getLocalisedMessageText(String key) {
        return (MessageText.getString(key));
    }

    public String getLocalisedMessageText(String key, String[] params) {
        return (MessageText.getString(key, params));
    }

    public boolean hasLocalisedMessageText(String key) {
        return MessageText.keyExists(key);
    }

    public String localise(String key) {
        String res = MessageText.getString(key);
        if (res.charAt(0) == '!' && !MessageText.keyExists(key)) {
            return null;
        }
        return res;
    }

    public Locale getCurrentLocale() {
        return MessageText.getCurrentLocale();
    }

    public LocaleDecoder[] getDecoders() {
        LocaleUtilDecoder[] decs = LocaleUtil.getSingleton().getDecoders();

        LocaleDecoder[] res = new LocaleDecoder[decs.length];

        for (int i = 0; i < res.length; i++) {

            res[i] = new LocaleDecoderImpl(decs[i]);
        }

        return (res);
    }

    public void addListener(LocaleListener l) {
        if (listeners == null) {

            listeners = new ArrayList();

            COConfigurationManager.addParameterListener("locale.set.complete.count", new ParameterListener() {
                public void parameterChanged(String parameterName) {
                    for (int i = 0; i < listeners.size(); i++) {

                        try {
                            ((LocaleListener) listeners.get(i)).localeChanged(MessageText.getCurrentLocale());

                        } catch (Throwable e) {

                            Debug.printStackTrace(e);
                        }
                    }
                }
            });
        }

        listeners.add(l);
    }

    public void removeListener(LocaleListener l) {
        if (listeners == null) {

            return;
        }

        listeners.remove(l);
    }
}
